/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlet;


import com.google.gson.Gson;
import entity.Chapter;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Nguyen Trung
 */
@WebServlet(name = "ListChapter", urlPatterns = {"/ListChapter"})
public class ListChapter extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("application/json;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String idBook = request.getParameter("idBook");
            System.out.println(idBook);
            Reader reader = new InputStreamReader(new FileInputStream(getServletContext().getRealPath("/Book/"+idBook+"/ListChapter.txt")),"UTF-8");
            BufferedReader br = new BufferedReader(reader);
            String strLine;
            ArrayList list = new ArrayList();
            int i = 1;
            while ((strLine = br.readLine()) != null) {
               
                Chapter tmp = new Chapter("Chap"+i,strLine,idBook,"path");
                list.add(tmp);
                i++;

            }
            Chapter[] chapters = new Chapter[list.size()];
            list.toArray(chapters);
            Gson gson = new Gson();
            out.println(gson.toJson(chapters));
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
